Summary Of Significant Accounting Policies (Details) - bank	6 Months Ended
Jun. 30, 2017	Jun. 30, 2016
Entity Location [Line Items]
Number of banking offices	11
Decrease in effective tax rate	2.20%
Effective tax rate	30.90%	33.10%
Sussex County, New Jersey [Member]
Entity Location [Line Items]
Number of banking offices	8
Bergen County, New Jersey [Member]
Entity Location [Line Items]
Number of banking offices	1
Warren County, New Jersey [Member]
Entity Location [Line Items]
Number of banking offices	1
Queens County, New York [Member]
Entity Location [Line Items]
Number of banking offices	1

Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 13
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32698-109319

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(h)(2))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319

Name:	us-gaap_EffectiveIncomeTaxRateContinuingOperations
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration